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Full text of "Circuits"

Pendulum Challenge Build 



Make] Projects 



Pendulum Challenge Build 

Written By: Michael Castor 



TOOLS: 


PARTS: 


Soldering station (1) 


Pendulum (1) 




Necessary to complete the build. 



SUMMARY 

This guide is intended to show you how to build the Pendulum Challenge Kit from the Maker 
Shed. The build involves soldering and should take less than half an hour. This is a good, fun 
project for beginners that is as fun to build as it is to play. 



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Pendulum Challenge Build 



Step 1 — Pendulum Challenge Build 




• Before I build something I typically 
dump out the contents and lay 
everything out. This makes it 
easier to find what you're looking 
for and lets you know if you're 
missing anything. The pendulum 
challenge kit has 26 parts including 
the screw for the battery cover. 



Step 2 




• First, let's isolate the PCB (printed 
circuit board). It's the big blue flat 
thing with white writing. All your 
components attach to this so it's 
pretty important. Orient it just like 
the picture. 



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Pendulum Challenge Build 



Step 3 




• Find the IC holder from your parts collection. It's the thing that kind of looks like a 
microchip but isn't. This is where the microcontroller plugs in. Notice how one end has a 
little notch in it? This is a directional part and must be inserted notch side up, just like the 
outline on the PCB. 

• Next, insert the IC holder notch side up just like the outline. Be sure that all the little legs 
go into the corresponding little holes! 

• Now in order to solder the IC holder, you are going to have to turn the PCB over to the 
back side with the IC holder still in place. If you bend a couple of the legs outward the IC 
holder won't fall out when you flip the board over. Once you bend the legs out, go ahead 
and flip over the board and solder the legs to the PCB. 

• Once all the legs are soldered in place you can clip off the excess with some side snips. 
You don't have to do this (there isn't much extra there to snip). 



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Pendulum Challenge Build 



Step 4 




• Now, obtain the green LED. Not a red LED, the GREEN one. You'll notice that one leg is 
longer than the other. The long leg is positive. (I remember it as long = more = plus. :) 
Place this LED into the hole for it in the center of the layout, long leg in the + hole. 

• Just as with the IC holder, spread the legs of the LED out on the back of the board so you 
can solder them into place. 

• Finally, snip off the excess with your handy side snippers. Watch your eyes! 

Step 5 




• Go ahead and populate the rest of the holes with the red LEDs. Remember, the long leg 
goes in the "+" hole! Spread the legs out on the back of the board as you go. 

• After you get the LEDs in place, turn the board over, solder, and clip the excess. I don't 
need to remind you to watch your eyes again, do I? 



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Pendulum Challenge Build 



Step 6 






• Now, on to buttons! There is a yellow-ish button and a red-ish button. Both are functionally 
the same so you can use either one you want for start and mode. I used the red-ish button 
for mode and the yellow-ish one for start. The legs are shaped so they happily snap into 
place. 

• Snap in the buttons, turn the board over, and solder away! Again the buttons have short 
legs so clipping is optional. I clipped mine just for fun. Remember the eye thing? 



Step 7 




• Let's take care of the resonator. It is brown-ish, has three legs, and has the words "ZTT 
26.00MX" on it. It doesn't matter which way this goes in so put it in place to the left of the 
IC holder. 

• Bend the legs, flip over the board, solder and clip. (EYES!) 



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Pendulum Challenge Build 



Step 8 



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mSBM 

1,— ; 






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• Now we are going to put in the capacitor. It's the little blue thing. It has some writing on it 
but I am not going to read it since it is the only blue thing in the kit that isn't the PCB. 

• It isn't a directional component so put it in place opposite the resonator, on the right of the 
IC holder. 

• Bend the legs, solder, and clip! (I would remind you about something but I think you've got 
it by now.) 

Step 9 




• Now for the power switch. It looks like, well, a switch! Put the legs into the holes any way 
they fit. 

• It's hard to bend these legs so just use a finger or the handle of your snippers to keep the 
switch in place as you solder. 

• Since the legs are short, snipping is optional. (Cough *eyes* cough.) 



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Pendulum Challenge Build 



Step 10 




• Since we're making a game, we are going to want it to make some noise. The speaker is 
round, has two legs, and has a sticker on the top saying something like "remove after 
washing." 

• You'll notice the legs are uneven, like the LEDs. Remember what this means? Yep, the 
longer leg is positive so be sure to put it in the "+" hole, bend the legs a little, solder, and 
clip. (I'm not going to remind you about the eye thing.) 



Step 11 







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• This is the easiest step of the 
project. Remove the sticker and 
stick it on a friend, dog, or in the 
trash. The trash is probably the 
best choice but the least amount of 
fun. 



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Pendulum Challenge Build 



Step 12 




• What good is a game without batteries? Find the battery pack (it's the big black thing with 
two wires that looks like a battery pack.) Feed the wires up through the bottom of the 
board through the appropriate hole (red to "Red," black to... you get the idea.) 

• Loop the wires over and put the shiny, stripped end into the appropriate hole. Gently pull 
the slack out of the wires until the loop pretty much disappears. 

• Now turn the board over and solder the wires. Clip off any excess. (I'm done reminding you 
about your eyes.) 

Step 13 





• Just to make life easier, I put a bit of foam tape (not included) on the back of the battery 
holder, then stuck it onto the back of the game. This is optional but really, really, handy. 

• Be sure to put the tape on the side opposite the battery cover. 



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Pendulum Challenge Build 



Step 14 




• It's time to put in the microcontroller. It looks like a black rectangle with lots of shiny legs. 
It's probably stuck into a bit of foam so go ahead and pull it out. 

• Like the IC holder, the microcontroller has a notch at one end. This notch needs to be 
oriented the same as the notch on the IC holder and the outline on the board. 

• Unfortunately, the microcontroller isn't going to fit right into the IC holder without bending 
the legs in a little. This is easiest to do by holding the microcontroller by each end and 
gently "rocking" the legs against a flat surface like a table. Do this on each side gradually 
until the legs fit into the IC holder. 

• Finally, place the microcontroller on top of the IC holder paying UTMOST ATTENTION TO 
THE DIRECTION OF THE NOTCH! BE SURE IT MATCHES THE DIRECTION OF THE 
OTHER NOTCHES. I'M SUPER SERIOUS! 

• Gently press down on the microcontroller (rocking may be necessary) until it is seated into 
the IC holder. 



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Pendulum Challenge Build 



Step 15 



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• Time for the last steps! Open up the battery holder and put in three AAA batteries. The 
screw is optional (I didn't use it). 

• Turn the game over, turn on the switch, and play! 

• Holding the "Mode" button down for a few seconds will mute the sound. Use the "Start" 
button to begin the game and stop the pendulum on the green light. It's a lot harder than it 
looks! 

• Now, sit back, play your new game, and bask in the awesome. You just made an 
electronic game! Congratulations! 

• I really hope you took my advice about the eye protection. If not, I guess you won't be 
reading this. Sorry about that. 



This kit is easy to build and provides hours of challenging fun! 



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Page 10 of 10